Operator’s Manual
VELKE HYDRO, COMFORT GRIP
FAILURE TO FOLLOW SAFE OPERATING PRACTICES MAY RESULT IN SERIOUS INJURY OR DEATH.
Read this manual and other manuals that came with your mower before operating.
©1998-2022 Wright Manufacturing, Inc. All rights reserved. This material may not be reproduced or copied, in whole or part, without written permission
from Wright Manufacturing, Inc. Grass Gobbler, Gobbler, Leaf Gobbler, Velke, Pro 1, X2, Stander, and Sentar are trademarks of Wright Manufacturing.
Serial # 155791 and higher until superseded
Revised 03/01/23
P/N
ii
Table of Contents
1 INTRODUCTION ........................................................ 1-1
2 NEW MACHINE SETUP ............................................. 2-1
3 SAFETY PRECAUTIONS ........................................... 3-1
Important .................................................................. 3-1
Safety features ......................................................... 3-1
Training .................................................................... 3-1
Preparation .............................................................. 3-2
Operating ................................................................. 3-2
Slope Specic .......................................................... 3-3
Children Specic ...................................................... 3-3
Fire and Fuel Specic .............................................. 3-4
Service ..................................................................... 3-4
4 MACHINE OVERVIEW ................................................ 4-1
Specications .......................................................... 4-1
Engine
Electrical System
Drive System
Hydro Oil System
Fuel System
General Dimensions
Torque Specications
Safety Interlock System ........................................... 4-1
Machine Features ................................................... 4-2
Overview
Operator Area
Control Panel Detail
Warning, Safety, and Instructional Decals ............... 4-3
Pictogram Meanings ................................................ 4-3
5 OPERATION ............................................................... 5-1
Adding Fuel .............................................................. 5-1
Fueling ..................................................................... 5-1
Starting the Machine ................................................ 5-1
Driving the Machine: ................................................ 5-2
Operating the Blade Switch (PTO) .....................5-2
Operating the Operator Presence Control (OPC)
Switch ...................................................................... 5-2
How to Stop and Park the Machine ......................... 5-2
Driving the Machine Over a Curb ............................. 5-3
Mowing on Varying Terrain ....................................... 5-3
Facing Uphill
Facing Downhill
Crossing a Slope Sideways
Discharge Chute ...................................................... 5-3
6 SERVICE AND MAINTENANCE ................................ 6-1
Neutral Adjustment ................................................... 6-1
Speed/Sensitivity Adjustment ................................... 6-1
Tracking Adjustment ................................................. 6-1
Check Machine Tracking
Adjust Machine Tracking
Tire Maintenance and Pressure ............................... 6-2
Troubleshoot No-Start Condition .............................. 6-2
Moving the Mower if it won’t Start ............................ 6-2
Troubleshoot No-PTO Condition .............................. 6-2
Height of Cut ............................................................ 6-2
Hydraulic Motor Support Adjustment
Using the Caster Shims
Deck Height Pins
Anti-Scalp Wheel Adjustments
Cut Setting Recommendations
Troubleshooting Cut Quality ..................................... 6-3
Belt Adjustment/Replacement .................................. 6-4
Replacing the Cutter Deck Belts
Replacing the Drive Belt
Hydraulic System ..................................................... 6-4
Bleeding Air from the Hydraulic System
Checking Oil
Filling oil
Lubrication ............................................................... 6-5
Spindle/Drive Pulley R&R ........................................ 6-5
Cutting Blades .......................................................... 6-5
Battery Service ......................................................... 6-5
Parking Brake Adjustment ........................................ 6-6
Loading/Unloading ................................................... 6-6
Transportation .......................................................... 6-6
Cleaning the Underside of the Mower ...................... 6-6
Engine Manual / Maintenance ................................. 6-7
Maintenance Interval Chart ...................................... 6-7
Daily Visual
Every 100hrs
Every 300hrs
Every 500hrs or Annually/Oseason
Maintenance Record ................................................ 6-8
Maintenance Record ................................................ 6-9
7 WRIGHT MANUFACTURING, INC. POWER
EQUIPMENT LIMITED WARRANTY .............................. 7-1
8 FEDERAL AND CALIFORNIA EMISSION CONTROL
WARRANTY STATEMENT ............................................. 8-1
Thank you for choosing to purchase our equipment. We are focused on giving you advanced engineering and
quality construction in each machine we build. This manual explains the features and promotes safer use of
the machine. Please read it in its entirety and follow the instructions carefully so that you can have many years
of safe and productive operation with your Wright machine.
Your Wright dealer knows your machine and is interested in your satisfaction. Your dealer can provide you with
quality maintenance and other assistance that you may need.
This manual is an important part of your machine and should remain with the machine when you sell it.
The owner’s responsibilities include, but are not limited to, ensuring operators and mechanics read and
understand this manual, adhere to its recommendations and procedures for safe operation, and maintain the
machine for safe operation. The owner must not make assumptions as to the qualication of operators or
permit careless or unqualied operators to have access to this machine. Wright reserves the option to make
changes at any time without notice.
It is a violation of California Public Resource Code Section 4442 or 4443 to use or operate the engine on any
forest-covered, brush-covered, or grass-covered land unless the engine is equipped with a spark arrester, as
dened in Section 4442, maintained in eective working order or the engine is constructed, equipped, and
maintained for the prevention of re.
The Engine Owner’s Manual contains information regarding the US Environmental Protection Agency
(EPA) and the California Emission Control Regulation of emission systems, maintenance, and warranty.
Replacements may be ordered through the engine manufacturer. Unauthorized changes to the engine, fuel or
venting system, may violate EPA and CARB regulations.
Accident prevention regulations, other general safety regulations, occupational safety rules, and trac
regulations must be followed without fail.
CALIFORNIA Proposition 65 Warning
The engine exhaust from this product contains chemicals known to the State
of California to cause cancer, birth defects, or other reproductive harm. Battery
posts, terminals, and related accessories contain lead and lead compounds,
chemicals known to the State of California to cause cancer and reproductive
harm. Wash hands after handling. Use of this product may cause exposure to
chemicals known to the State of California to cause cancer, birth defects, or
other reproductive harm. For more information go to www.P65Warnings.ca.gov.
SAFETY ALERT
This safety-alert symbol is used throughout the manual to identify potential hazards that may cause serious
injury or death. To reduce the potential for injury, comply with these safety instructions, and pay attention to the
safety alert symbol, which means Caution, Warning, or Danger—personal safety instructions. Failure to comply
with the instructions may result in personal injury or death.
1-1
1 INTRODUCTION
2-1
2 NEW MACHINE SETUP
If you are not completely familiar with the Safety Instruction Manual read it now before proceeding with the
Pre-Delivery Service of the mower.
The following items must be completed before attempting to operate a newly delivered machine.
1. Inspect the mower for any damage, missing parts, and labels.
2. Check for any recall or service notices.
3. Check and adjust engine oil.
4. Check and adjust hydraulic uid level.
5. Check and adjust rear tire pressure – 18-22 psi. is recommended. A change in tire pressure may require
the cutter deck to be readjusted.
6. Connect battery cables, red rst, and then black.
7. Check the deck height select for proper operation and range.
8. Add regular unleaded gasoline to fuel tank.
9. Check brake and control interlock.
a. Try starting the engine with the parking brake released. (Engine should not start).
b. With the hand controls in the middle or neutral position, apply the parking brake.
c. Start the engine.
d. Check if the parking brake locking system prevents the machine from being driven while engaged. If
not, service the brake system.
e. Release the parking brake. Move the control levers, one at a time, to make the wheels move in forward
and backward rotation.
10. Test the Clutch/Brake
a. Insure the area is clear of people and objects that may be thrown.
b. Move the engine throttle control to ¾ RPM speed setting.
c. Turn on the blade clutch switch and check for normal operation.
d. Cycle the PTO a few times about 10 seconds apart. If the blades do not start and stop with-in 7
seconds each time, service the blade brake system.
e. With the blades on, disengage the OPC switch to test the Operator Presence Control switch (OPC).
The engine should die and the blades should stop with-in 7 seconds. If not, service the OPC system.
f. Disengage the blades.
11. Drive the mower around an open level area. Check that the mower drives in a reasonably straight line.
12. Listen for any unusual noises and test for irregular operation and adjust or service as necessary.
13. Go over the safety information and operating procedures in this manual with the operator. Instruct each
operator in proper operation and observe during initial operation on a level area. Repeat until the operator
is familiar and comfortable with the basic operation and use of the mower.
Dealer:
Register the mower online within 14 days from the date of retail purchase. Registering the product indicates
you have successfully completed the pre-delivery service checklist. The limited warranty is considered invalid
unless the unit is registered and the above steps are taken.
Remember, the purchaser is both your customer and our customer and his/her satisfaction is very important.
Thank you for supporting our products.
3 SAFETY PRECAUTIONS
3-1
Important
This machine is capable of amputating hands and
feet and throwing objects. Failure to observe the
following safety instructions could result in serious
injury or death.
• This machine is constructed only for o-road
use mowing grass on lawns without obstacles
such as stones, tree stumps, and steep inclines.
• The machine can also be used for other tasks
when equipped with approved attachments, for
example the Grass Gobbler and Velke. Some
accessories may void your warranty.
• Lawn machines and all power equipment can
be dangerous if used improperly or by untrained
operators.
• The owner/user can prevent and is responsible
for accidents, injuries occurring to people, or
damage to property.
• Only operate the machine in daylight or good
articial light. Failure to clearly see the ground
while operating may result in sudden impact,
loss of control, or thrown objects.
• Only operate the engine in well ventilated
areas. Exhaust gases contain carbon
monoxide, a deadly poison.
• Lightning can cause severe injury or death.
If lightning is seen, or thunder is heard in the
area, do not operate the machine.
• Do not operate the machine while tired, ill, or
under the inuence of alcohol or drugs.
• This machine is designed for use by physically
t, experienced, and professional commercial
operators which must be no less than 120
pounds and no more than 325 pounds.
• Do not wear radio or music headphones or use
a digital device. Safe service and operation
require your full attention.
• Always follow OSHA approved operation.
• When machine is left unattended, stored, or
parked, lower the cutter deck until it rests on a
positive mechanical stop.
• Do not carry passengers and keep bystanders
away.
• Do not carry equipment on the machine.
• When loading or unloading use only a full-width
ramp which is wider than the machine, provides
good traction, and is not positioned with a steep
angle. Use caution when loading or unloading.
• When hauling, tie the machine down with
appropriately rated straps or chains.
• Never leave or park the machine unattended on
sloped ground or incline.
• Use only approved repair parts to maintain.
• Unauthorized modications to the machine may
impair its function and safety.
Safety features
The machine is designed with your safety in mind.
It has the following safety systems with which you
should become familiar:
• The warning decals on the machine including
the instrument panel and cutter deck.
• The brake must be engaged and the PTO/blade
switch “o” prior to starting the engine.
• The OPC switch must be actuated in order to
engage the blades.
• Disengaging the Operator Presence Control
(OPC) switch while the blades are running will
cause the engine and blades to stop with-in 7
seconds.
• Spring loaded chute deector helps reduce
trajectory of thrown objects.
• Belt, pulley, fan, and heat covers on to reduce
access to moving and hot parts.
• Anti-tip rollers provided at the rear of the
machine reduce the risk of machine tipping.
• DO NOT disable any of the safety features.
• Unauthorized modications to the design of
the machine will absolve the manufacturer
from liability for any resulting personal injury or
property damage.
Training
• Read the operators manual, warnings, labels,
attachments manual, engine manual, and other
training material carefully. If the operator or
mechanic cannot read the language provided,
it is the owner’s responsibility to explain this
material to them.
• Become familiar with the safe operation of the
equipment, operator controls, and safety signs.
• All operators and mechanics should be trained.
The owner is responsible for training the users.
• Never let children or untrained people operate
or service the equipment. Local regulations may
restrict the age of the operator.
• The owner/user can prevent and is responsible
for accidents or injuries occurring to himself or
herself, other people, or damage to property.
• Only allow operators, who are responsible,
trained, familiar with the instructions, and
physically capable to operate the machine.
3-2
Preparation
• Carefully inspect and walk the property where
you plan to use the machine for hidden, hard-
to-see objects or uneven ground that may
be hidden in the grass. Uneven terrain could
overturn the machine, or cause the operator to
lose balance or footing.
• Clear the work area of moveable objects,
including but not limited to, rocks, glass,
toys, wires, dog chains/cables, and golf balls
that might be picked up by the machine and
dangerously thrown.Remove or mark the
location of all immovable objects or irregular
areas and be sure not to hit them with any
part of the machine. Obstacles including and
not limited to holes, abrupt changes in ground
contour, tree trunks, stumps or roots, pipes or
posts, paving edges, and rock outcroppings can
abruptly turn or stop the machine. This could
throw you o the machine or possibly over the
handle bars causing serious injury or death.
• Check carefully for overhead obstacles (i.e.
branches, clothes lines, doorways, electrical
wire, decks, building overhangs, etc.) before
operating and do not operate near them.
• Wear appropriate clothing and personal
protective equipment; including safety glasses,
long pants, substantial slip-resistant footwear,
gloves, and hearing protection. Tie back long
hair.
• Do not wear jewelry, sneakers, sandals, shorts,
baggy clothing, or any clothing or accessories
with loose loops or lanyards.
• Keep the area of operation clear of all
bystanders, particularly small children. Stop the
machine and attachment(s) if anyone enters the
area.
• Check that the operator’s presence controls,
safety switches, interlocks, hardware, and
shields are attached and functioning properly.
Do not operate the machine unless they
are functioning properly. Repair or replace
damaged, badly worn, or missing parts
• Do not operate machine without the entire
grass catcher, discharge chute, or other
safety devices in place and functioning
properly. Check frequently for signs of wear or
deterioration and replace as needed.
• Ensure that all drives are in neutral and that
the parking brake is engaged before starting
engine. Start the electric start engines only from
the operator’s position.
• Before using, always visually inspect to see
that the blades, blade bolts and the mower
assembly are not worn or damaged. Never
straighten or weld blades.
Operating
• Keep a rm hold of the stationary handle at
all times. Keep both feet on the platform at all
times.
• To prevent serious injury never place your foot
or feet on the ground near the back edge of the
machine while backing up.
• Do not suddenly push controls in forward
direction while machine is in a rearward motion.
Operate the controls smoothly.
• Do not mow in reverse unless absolutely
necessary. Always look down and behind before
and while backing to ensure a clear path. Use
extra caution when operating in reverse.
• Do not operate the machine faster than
conditions allow. For example, hills, wet or
bumpy ground, dim light or high grass are all
conditions requiring slower speeds. Never
operate the machine at the highest speed
unless you are on level, wide, open areas
of clearly visible ground or transporting on
paved areas. Speeding with any machine is
dangerous, and so is traveling faster than
conditions should permit on this machine.
Sudden stops from excessive speed or falling
o the machine may cause serious injury or
death.
• Know the controls and how to stop quickly.
• During zero-radius turns (when one machine
wheel rotates backwards while the other
rotates forward) drive extra slowly to reduce the
possibility of losing traction, losing control, or
losing your balance. This will help prevent you
from being thrown o the machine.
• Use care when approaching blind corners,
shrubs, trees, or other objects that may obscure
vision.
• Slow down and use caution when making turns
and crossing roads and sidewalks. Stop the
blades if you are not mowing. Watch for trac
when operating near or crossing roadways.
• Turn o blades and wait for them to stop before
crossing roadways, gravel areas, and climbing
or dismounting curbs.
• Do not raise the mower deck with the blades
running.
• Do not direct discharge material toward anyone.
Avoid discharging material against a wall or
obstruction. Material may ricochet back toward
the operator.
3-3
• If the machine discharge clogs, turn o the
blade clutch switch, apply the parking brake,
stop the engine and remove the key before
removing obstruction(s).
• Do not leave the machine running unattended.
Always park on level ground, disengage the
attachment, set parking brake, and stop engine.
• Stop on level ground, disengage drives,
engage the parking brake, and shut o the
engine before leaving the operator’s position
for any reason including emptying the catchers,
unclogging the chute, and servicing the blades
or cutter deck.
• Stop equipment and inspect the blades after
striking objects or if an abnormal vibration
occurs. Make the necessary repairs before
resuming operations.
• Keep hands, feet and clothing away from
rotating parts, especially the rear wheels,
blades, engine ywheel, fans, belts and pulleys.
• Do not touch parts that may be hot from
operation. Allow the machine to cool before
attempting to maintain, adjust, service, unjamb,
or service the machine.
• Do not put hands or feet near rotating parts or
under the machine. Keep clear of the discharge
opening at all times.
Slope Specic
• Before operating on slopes, walk the area
and evaluate the surface for traction and
smoothness. Slopes with drop os, water, or
compromised traction should be maintained
through other maintenance techniques.
• Slow down and use extra care on hillsides. Be
sure to travel in the recommended direction on
hillsides. Turf conditions can aect the stability
of the machine.
• Do not operate near drop-os, ditches,
embankments, or water. The machine could
suddenly roll over if a wheel goes over the
edge or the edge caves in. The machine could
suddenly slide if traction is compromised. Leave
a safety area between the machine and any
hazard.
• Slow down and use caution when making turns
and when changing directions on slopes.
• Slopes are a major factor related to accidents.
Operation on all slopes requires extra caution.
• Establish your own special operating
procedures and rules for operating on slopes.
These procedures must include a survey of
all mowing sites to determine which slopes
are acceptable. Always use caution, and good
judgement when performing this survey.
• Note that high traction conditions present a
greater rollover hazard while lower traction
conditions present a greater loss of control
hazard. Ground and turf conditions vary
depending on the weather and must be taken
into consideration at all times.
• Some liquid landscape chemicals contain
surfactants which may by very slippery and
severely compromise safe operation.
• Do not operate on steep slopes.
• Do not operate the machine on slopes when the
grass is wet.
• Do not operate machine under any condition
where traction, steering, or stability is in
question. Tires could slide even if the wheels
are stopped.
• Always keep the machine in gear when going
down slopes. Do not coast downhill.
• Avoid starting and stopping on slopes. Avoid
making sudden changes in speed or direction.
Make turns slowly and gradually.
• Use extra care while operating machine with a
grass catcher or other attachment(s). They can
aect the stability of the machine.
• There is a danger of suddenly sliding sideways
or down the hill. When operating on a slope,
travel across the grade whenever possible, not
in an up or down pattern.
• Reduce speed and exercise extreme caution
on slopes and in sharp turns to prevent tipping
or loss of control. Be especially cautious when
changing direction on slopes.
• Do not operate tires that are worn beyond 3/32”
of tread. Do not use unapproved treads or tire
pressures. Unapproved treads or excessive
pressures can compromise your traction.
Children Specic
• Death or serious injury can occur when young
children associate having fun with lawn mowing
equipment.
• Children who have been entertained with power
equipment in the past may be attracted to
the machine while operating. Children do not
understand the hazards of rotating blades and
moving equipment. Never use the machine as a
recreational vehicle or to entertain children.
• Never allow children or untrained operators to
operate the machine. Instruct all operators to
not give children rides.
3-4
• Tragic accidents can occur if the operator is not
alert to the presence of children. Children are
often attracted to the machine and the mowing
activity.
• Never assume that children will remain where
you last saw them.
• Keep children out of the operating area and
under the watchful care of a responsible adult
other than the operator.
• Do not carry children, even with the blade(s)
shut o. Children could fall o and be seriously
injured or interfere with safe machine operation.
Children who have been given rides in the past
could suddenly appear in the mowing area for
another ride and be run over or backed over by
the machine.
• Do not allow children to play on or around
machine when not in use and never leave the
key in the ignition switch. Children may be
injured by hot components and are prone to
attempt operating all functions of the equipment
which may result in becoming pinched, crushed,
or unintended operation.
Fire and Fuel Specic
• Besides routine maintenance, one of the best
ways to reduce the risk of re is to regularly
check and remove debris and combustible
residue from the machine.
• Use extra care when handling fuels. They are
ammable and vapors are explosive.
• Use only an approved container.
• Do not remove the fuel cap or add fuel with the
engine running. Allow the engine to cool before
refueling.
• Keep the machine and engine free of grass,
leaves, excessive grease, oil, or other debris at
all times to reduce the risk of re.
• Do not use the machine to push combustible
materials, such as leaves, branches, or tall
grass.
• Never smoke when handling fuel, and stay
away from open ame or where fuel fumes may
be ignited by spark.
• Never start the engine in an enclosed space
with the presence of fuel vapor. Starting the
engine may ignite fuel vapors.
• Do not smoke near the machine when the
engine is running.
• Do not refuel indoors or in enclosed spaces.
• Never overll the fuel tank.
• Remove machine from truck or trailer before
fueling.
• Do not store the machine or fuel container, or
refuel, where there is an open ame, spark, or
pilot light such as on a water heater or other
appliance.
• If fuel is spilled, do not attempt to start the
engine and avoid creating any source of ignition
until fuel vapors have dissipated.
• Allow machine to cool before storing or
covering. Machine res and structural res can
occur if a machine is stored before allowing it to
cool.
• Always shut o fuel when storing or
transporting.
• Check fuel lines, tank, cap and ttings
frequently for cracks or leaks. Replace
immediately if necessary.
Service
• Only qualied and trained persons who
understand the warnings in this manual should
service this machine.
• Examine the moving parts prior to each use.
Look for excessive wear, deterioration, bald or
worn tires, cracks in parts, lose or missing bolts,
pins, and replace before operating the machine.
Inspect fuel system for leaks or cracks in hoses,
tank(s), and seals.
• Make sure all safety equipment provided
with the machine is in good operating order,
including all the warning decals and the
required operator-presence device which stops
the engine and blades when the switch is
released.
• Inspect the two anti-tip rollers and their
respective bolts at the rear of the machine for
tightness and proper operation.
• Be sure that all parts of the hand-operated
control system are tight and secure. This is to
reduce the possibility that the machine could
have a loss of control.
• Ensure all safety related switches are
operational. Do not disable safety switches.
• Use caution when servicing blades. Wrap the
blade(s) or wear gloves. Replace damaged
blades. Do not repair or alter blade(s). Do
not use blades that have been improperly
sharpened or beyond the serviceable limits. Do
not use blades from unveried sources as the
material may not be suitable.
• Machines with hydraulic pumps, hoses, or
motors: WARNING: Fluid escaping under
pressure may have sucient force to penetrate
skin and cause serious injury. If uid is injected
into the skin, seek immediate medical attention.
3-5
Keep body and hands away from pin holes or
nozzles that eject uid under high pressure. If
a leak occurs, have the machine immediately
serviced by a trained technician. Never use
hands to search for hydraulic leaks. Use
paper, cardboard, or UV dye. Keep body and
hands away from pin holes or ttings that eject
hydraulic uid under high pressure.
• Disconnect spark plug wire(s) and the negative
battery cable before making any repairs.
• The machine should not be used after the
blades or other part of the machine strikes
a foreign object, until conducting a thorough
inspection and any damage is repaired.
• Do not climb underneath
• Do not service the machine while suspended
by an unapproved lift, such as a forklift, or hoist/
structure not approved for overhead lifting.
Use proper lifts, or jack stands to support the
machine.
• Don’t change RPM’s outside of operating limits
or alter the governor operation
• Do not tow or push with force or over long
distances. When moving stuck or disabled
equipment, place transmission(s) in neutral or
hydro bypass.
• Use tires with the original tread pattern. Use
of alternate tires and treads may cause loss of
control.
• Use of parts other than specied parts
supplied by Wright Manufacturing, Inc. may
compromise the safe use of the machine and
not recommended. Their use could void the
warranty. Always check with your Dealer or the
Wright website, www.wrightmfg.com for the Part
Lists and diagrams for your machine.
• Waste products, such as used oil, fuel,
coolant, brake uid and batteries, can harm the
environment and people. Do not use beverage
or unlabeled containers for waste uids –
someone may drink from them. Do not leave
open containers where they can be accessed
by children or animals.
4-1
4 MACHINE OVERVIEW
Safety Interlock System
The machine is equipped with a start interlock system. The PTO must be disengaged; brake applied and
control handles in the neutral position in order to start the machine.
If the safety-interlock switches are disconnected or damaged, the machine could operate
unexpectedly, causing personal injury. Do not tamper with the interlock switches. Check the
operation of the interlock switches daily and replace any damaged switches before operating the
machine
Specications
Engine
• See your engine owner’s manual
• Full speed 3600 +/- 50 RPM
• No load/Idle: 1550 RPM
Electrical System
• Charging System: Internal stator coil
• Battery Type: Maintenance free
• Battery Voltage: 12 Volts
• Fuses: Two, 20 amp blade type
Drive System
• Hydro Gear 10cc variable displacement piston
pumps
• Hydro Gear 12 cu. in. wheel motors
Hydro Oil System
• Hydro Oil: Wright Blend Full Synthetic 15W-50
Wright PN 36490013
• Hydro Filter: Spin-on, 25 micron, no bypass
Wright PN 34490002
• Tank Fill Level: Until uid is visible in the sight
glass
• Capacity: approx 3 qts (2.8L)
Fuel System
• Capacity: 5.5 gal (20.8L)
• Fuel Type: Unleaded regular gas, min 85
octane. Do not use gasoline containing more
than 10% ethanol. Do not mix oil with gasoline.
• Fuel Filter: In line
• Fuel shut o: On, O located on fuel tank
• Fill Level is 1” below the neck
General Dimensions
32” 36” 48” 52”
Width, Chute down 45.5” 48.5” 61” 65”
Width, Chute up 33.5” 36.5” 49” 53”
Length 72” 74” 69” 71.5”
Weight 540 lb 562 lb 694 lb 717 lb
Torque Specications
Critical Application Thread Locker Torque (ft-lbs)
Wheel motor bolts Loctite 2760 40-50
Clutch to engine shaft Loctite 2760 50-55
Wheel hub to wheel motor N/A 138-158
Wheel lug nuts N/A 80-90
Split Hub (Spindle & Drive) N/A 13-17
Blade Bolts N/A 70-80
Engine Mounting Bolts Greased 35
Caster Wheel Bolt N/A 38
Caster Yoke Pivot N/A 38
Pump Pulley N/A 14
Pump Bypass Valve N/A 42 in-lbs
4-2
Machine Features
• This machine is meant to solely cut, bag or mulch grass.
• The use for any other purpose is not recommended.
• Do not disconnect any safety switches or remove any decals.
Overview
1. Flexible Chute Deector
2. Rear Drive Tire
3. Fuel Tank w/ Vented Cap
4. Battery Box
5. Front Caster Tire
6. Cutter Deck
7. Engine
8. Muer/Heat Shield
Operator Area
1. Brake Lever
2. OPC Paddle
3. Control Linkage
4. Parking Brake
5. Sulky Latch Mechanism
6. Sulky Mounting Point
Control Panel Detail
1. Throttle
2. Choke
3. Digital Hour Meter
4. PTO Switch
5. Ignition Switch
6. Speed Control Knob
7. Neutral Latch Lock
4-34-3
Warning, Safety, and Instructional Decals
• Specic safety warning decals are located on the equipment near immediate areas of potential hazards.
• Keep all safety signs legible - Replace worn, damaged or missing safety decals.
• Remove all grease, dirt and debris from safety signs and instructional decals.
• If an attachment or accessory has been installed, make sure current safety decals are visible
Pictogram Meanings
Warning: Let the machine
cool down prior to fueling
Warning: Inspect work area for objects that can be
thrown or impacted
Warning: Hot surface.
Stay away.
Warning: Keep the cutter deck opening covered or
the chute down while operating
Engage hand brake Warning: Entanglement hazard
Engine speed control.
Pull switch to engage
blades/PTO. Push switch
to disengage blades/PTO.
Warning: Keep debris o machine at all times
Warning: Stop the blades,
place the controls in
neutral and engage the
brake before dismounting
machine
Warning: Read the Operator’s Manual. Do not
operate this machine unless you are trained.
Warning: Before servicing stop the engine, remove
the key, and read the Operator’s Manual
Ignition: o, on, engage
brake to start
Warning: Stay away from people and children.
Do not operate the machine when children and/or
others are around.
Warning: Use eye and hearing protection
Warning: Keep hands and
feet away from moving
parts
Warning: Thrown object hazard
Warning: Keep shield and
guards in place
Warning: Identies potential hazards that may
cause serious injury or death if you do not follow
the recommended precautions.
Warning: Do not operate
near drop os or water
Warning: Before servicing stop the engine, remove
the key, and read the Operator’s Manual
Warning: Fire hazard Warning: Operate slowly on any incline
Warning: Thrown object
hazard
Warning: This safety-alert symbol is used to
identify potential hazards that may cause serious
cutting or severing hands and feet
5 OPERATION
5-1
Basic Operation: The following procedures are
to guide you through the basic operation of the
machine. You should be a qualied machine operator
according to the safety section of this manual. You
should go through each step, in the order indicated,
every time you start the machine.
This machine produces sound levels in
excess of 85dBA at the operator’s ear and can
cause hearing loss from extended periods
of exposure. Wear hearing protection when
operating this machine.
Adding Fuel
• In certain conditions, fuel is extremely
ammable and highly explosive. A re or
explosion from fuel can burn you and others
and can damage property.
• Fill the fuel tank outdoors, in an open area,
when the engine is cold. Wipe up any fuel that
spills.
• Never ll the fuel tank inside an enclosed trailer.
• Do not ll the fuel tank completely full.
• Add fuel to the fuel tank only to the bottom
of the ller neck. This empty space provided
allows fuel to expand.
• Never smoke when handling fuel, and stay
away from an open ame or where fuel fumes
may be ignited by a spark.
• Store fuel in an approved container and keep it
out of the reach of children.
• Do not operate without entire exhaust system in
place and in proper working condition.
• Never start the engine in an enclosed space
with the presence of fuel vapor. Starting the
engine may ignite fuel vapors.
In certain conditions during fueling, static
electricity can be released causing a spark,
which can ignite the fuel vapors. A re or
explosion from fuel can burn you and others
and can damage property.
• Always place fuel containers on the ground
away from your vehicle before lling.
• Do not ll fuel containers inside a vehicle or on
a truck or trailer bed because interior carpets
or plastic truck bed liners may insulate the
container and slow the loss of any static charge.
• When practical, remove gas-powered
equipment from the truck or trailer and refuel
the equipment with its wheels on the ground. If
this is not possible, then refuel such equipment
on a truck or trailer from a portable container
rather than from a fuel-dispenser nozzle.
• If you must use a fuel-dispenser nozzle, keep
the nozzle in contact with the rim of the fuel
tank or container opening at all times until
fueling is complete.
• Long-term exposure to vapors can cause
serious injury and illness.
• Avoid prolonged breathing of vapors.
• Keep your face away from the nozzle and fuel
tank or conditioner bottle opening.
• Avoid contact with skin; wash o spills with
soap and water.
• Never siphon by mouth
Fuel is harmful or fatal if swallowed.
Use only clean fresh fuel rated 87 octane or higher.
Do not use fuel with more than 10% ethanol, such
as E15, E20, or E85. Do not use fuel containing
methanol, which is harmful to human health. Do not
store untreated fuel in the machine when not used for
more than 30 days.
Fueling
1. Park machine on level ground in an open area,
engage the parking brake, and remove the key.
2. Allow the machine to cool down before fueling.
3. Fill the tank to the bottom of the ller tube.
Do not over ll to allow space for the fuel to
expand.
4. Securely install the fuel cap.
5. Check for any leaking or spilled fuel prior to
starting the engine.
Starting the Machine
Note: All engines consume oil. Before using, check
the engine oil.
1. Before starting the engine, make sure the
neutral latches are in the locked position.
2. Apply the parking brake if it is not already set.
3. Set the speed adjustment lever to the “Slow”
position.
5-2
4. Turn OFF the blade switch if it is on.
5. Turn fuel valve to the “ON” position.
6. Start the engine according to the engine
manufacturer’s recommendation, see engine
manual. Set the throttle control lever near mid
throttle, pull out on the choke control knob
(carbureted models) and turn the key to the
start position.
• Do not engage the starter for more than ten
(10) seconds at a time. This may overheat
the starter and the wiring systems. Wait ten
(10) seconds between attempts. If the engine
does not start after several attempts or stalls
frequently, take the machine in for service.
• After starting the engine according to the engine
manufacturer’s recommendation, push in on the
choke control knob to open the choke valve.
Driving the Machine:
1. Release the parking brake and set engine
speed about ¼ of the way from idle.
2. While squeezing the steering brake levers,
release both neutral latches.
3. Slowly release both brake levers to begin
moving forwards. To make a turn, squeeze the
brake lever of the direction you wish to turn in.
To move in reverse, squeeze both brake levers
up past the neutral position.
4. Once comfortable operating the machine,
increase the engine speed to about 1/2 from
idle speed. The higher engine speed will make
the controls much more responsive and the
machine much quicker.
5. New operators should continue to practice
driving the machine in an open area, with the
blades o, at a partial engine speed.
6. Unusual noises or irregular operation: As you
drive the machine, listen for any unusual noises
and test for irregular operation and adjust or
service as necessary.
Operating the Blade Switch (PTO)
Rotating blades may cause severe injury. Before
engaging the cutter blades or PTO, make sure
that the area is clear of bystanders, especially
children.
1. Squeeze the OPC paddles to engage the
Operator Presence Control (OPC).
2. With the engine running, set the engine speed
to approximately ¼ to ½” position.
3. Pull the PTO switch up to engage the cutter
blades.
4. Increase the engine speed to the fast position
for mowing.
Note: Engaging and disengaging the PTO at full
engine speed will not immediately harm the machine,
however the life of the clutch will be much longer if
the engine speed is reduced before engaging the
PTO and again reduced before disengaging the PTO.
This is especially true on larger width machines with
more powerful EFI engines and mulch blades.
Operating the Operator Presence Control (OPC)
Switch
1. With the parking brake applied and the blades
ON, remove both hands from the OPC paddles
to test the Operator Presence Control switch
(OPC).
2. The engine should kill and the blades should
stop within 7 seconds. If not, service the OPC
system or contact your local Wright dealer. The
OPC switch is located directly above the right
side of the platform and the start/brake switch is
located under the instrument panel.
How to Stop and Park the Machine
1. Come to a complete stop.
2. If the blades are on, turn them o using the
switch on the instrument panel.
3. Make sure the neutral latches and speed lever
are in the neutral position.
4. Set the parking brake by pulling up on the brake
handle.
5. Reduce the engine speed to idle.
6. Shut o ignition switch to stop the engine and
then remove the key from the ignition switch.
7. The machine is now parked.
8. Do not leave machine unattended on a sloped
surface.
Children or bystanders may be injured if they
move or attempt to operate the machine while
it is unattended. Always remove the key and
engage the parking brake when leaving the
machine unattended.
5-3
Driving the Machine Over a Curb
It is recommended to use ramps for curbs 5” and
higher. Using ramps, you can easily back on and o
without damaging your machine or the curb.
1. Drive the machine in reverse at a 45 degree
angle to the curb until you are within an inch or
two of the left-rear tire hitting the curb.
2. Stop and then gradually bump into the curb with
that tire until it is just on top of the curb.
3. If the tire slips then the curb is too high and you
should use ramps.
4. While maintaining the same angle to the curb,
continue to back up until the other rear tire
climbs the curb.
5. After both drive wheels are on top of the curb,
back up so the caster wheels comes over last.
• The technique works the best if you try not to
drive backwards at a near 90 degree angle to
the curb.
• To drive o a curb, reverse the procedure.
• Do NOT step o the machine during ANY
maneuver.
Note: Never drive straight onto or o a curb or climb
or “pop a wheelie” to climb a curb. Abruptly mounting
and dismounting a curb increases the fatigue of the
frame, transmissions, and caster wheels.
Mowing on Varying Terrain
Operating the machine on or near slopes
increases the hazard of rollover and loss of
control and may cause severe injury or death.
Refer to the SAFETY PRECAUTIONS section of
the manual and follow the recommendations
provided.
Facing Uphill
• Lean as far forward as possible to add your
weight to the front of the machine.
• Accelerate gently. Do not accelerate quickly
to avoid allowing the front wheels to lift o the
ground.
• If backing down the hill, do not stop suddenly
but slow down gradually.
Facing Downhill
• Machine has the least weight on the rear drive
wheels and therefore the least traction at the
tires. This is the angle that the machine has the
most tendency to slide.
• However, this is the angle that it has the least
tendency to tip back.
• Lean back with arms stretched out straight
while holding onto the stationary handlebar.
This transfers more of your body weight to the
rear drive wheels for more traction.
• Do not change speed suddenly to minimize the
tendency to slide.
Crossing a Slope Sideways
• Machine has the average amount of weight on
the drive wheels versus the front wheels.
• This angle leaves the least weight on the higher
side drive wheel, increasing the tendency to
slip.
• However this is the preferred angle for mowing
large areas of gentle slopes.
• Lean back and angle yourself to the higher side.
This adds weight to the rear drive wheels and
will provide greater traction.
Discharge Chute
Without the discharge chute, discharge cover,
or complete grass catcher assembly mounted
in place, you and others are exposed to blade
contact and thrown debris. Contact with
rotating mower blade(s) and thrown debris
cause injury or death.
• Do not remove the chute deector from the
mower or permanently secure it in the transport
position in a manner that overrides the closing
spring.
• If the grass deector is ever damaged, replace
it immediately.
• Never put hands, feet, or head under the
mower.
• Never try to clear the discharge area or mower
blades unless the Blade Switch (PTO) is o and
the ignition key is removed.
6 SERVICE AND MAINTENANCE
6-1
Neutral Adjustment
Neutral refers to the machine movement when the
engine is set to full throttle, parking brake is o, and
the control levers are in the neutral position.
The machine should not move forward or backward
in this state. If it does, the neutral setting must be
adjusted by using the Return-to-Neutral (RTN) device
built into the linkage of the hydraulic pump.
1. Lift the rear drive wheels o the ground using a
jack and stands.
2. Start the engine.
3. Have a helper hold the OPC down so that both
your hands are free to make the adjustments.
4. Set the speed control lever to a forward speed
greater than 2.
5. The control levers should remain locked in the
neutral position via the thumb locks.
6. Observe the drive wheels.
7. If either wheel rotates, loosen the upper and
lower steering control rod jam nuts for that side
and adjust the rod longer or shorter until the
wheel stops.
8. Find the midpoint adjustment in the range that
the wheel remains stopped.
9. Retighten the rod jam nuts.
10. Cycle the speed control thru the speed settings.
11. The wheels should now go to a neutral position
if the steering control levers are locked using
the thumb locks.
Speed/Sensitivity Adjustment
The controls are initially set with the Speed/
Sensitivity Adjustment in the faster, more sensitive
position.
Some operators may desire to decrease the ground
speed. The slower setting has a corresponding
decrease in the sensitivity of the controls. In other
words, a given amount of movement of the control
levers will cause about a 25-30% change in the
ground speed making the controls less sensitive.
1. Stop the engine
2. Remove the bolts securing the control rods to
the control levers
3. Re-install the rods into the alternate holes
4. Perform the tracking adjustment
BE SURE THE CONTROL ROD BOLTS ARE
SECURELY IN PLACE EACH TIME YOU
REMOVE THEM.
Tracking Adjustment
Check Machine Tracking
1. Ensure rear tire pressure is equal on both sides.
2. Drive at full throttle in a level parking lot.
3. Check if the machine drives straight when both
control levers are in the full speed position. If it
does not, tracking adjustment is needed
Adjust Machine Tracking
1. Park the machine and be sure engine is o.
2. Locate the linkages attached to the pump RTNs
3. Turn the tracking nuts to adjust the speed on
each side.
a. CCW turns decrease speed for that side
b. CW turns increase speed for that side
4. Repeat driving the mower and making
incremental adjustments after shutting the
engine o until the mower tracks straight.
6-2
Tire Maintenance and Pressure
• Excessively worn tire tread is dangerous on all
hills. Replace drive tires with less than 3/32” of
any tread groove left.
• Use tires with the tread pattern recommended
by Wright Mfg., Inc. only.
• Keep the drive tire pressure between 18-22 psi.
• Higher pressures cause the tires to have less
traction, decreasing safety, speed and ride
quality
• Front Casters are equipped with non-pneumatic
tires and do not require any air. They do not
have any tread but should be replaced when
excessively worn.
Troubleshoot No-Start Condition
1. Check that the battery is fully charged. If the
battery repeatedly dies, check the regulator
and charge wire going from the regulator to the
starter battery stud.
2. Check that the fuel valve is fully open.
3. If battery is good and starter does not engage
a. Check that the park brake is engaged and the
PTO switch is o.
b. Check the fuse o the wiring harness.
c. Check battery (+) and (-) wires to the engine.
d. Check the harness ground wire at the engine.
e. Check the harness power connection (red)
where the battery cable is connected to the
engine/solenoid
f. Check the connections of the (green) start
wire at the key switch, PTO interrupt switch,
brake interlock switch, and starter.
g. The starter may have failed. Check your
engine manual.
Moving the Mower if it won’t Start
• Rotate both of the hydro bypass valves about 2
turns CCW.
• DO NOT over tighten these valves.
• Damage may occur to pump if valve is over
tightened.
Troubleshoot No-PTO Condition
4. Engine runs but PTO won’t engage.
5. Shut down machine, remove key, allow to cool,
and check the belt and wiring going to clutch.
6. While the engine is o, disconnect the clutch
wire, turn on the blade switch and check for
battery power from the harness. The Blue wire
that goes to the red clutch wire is power from
the PTO switch. The black/orange strip wire
going to the black clutch wire is the ground wire
going to the relay, switch by the platform switch.
a. If no voltage, check relay, Operator Presence
Switch, and PTO switch
b. If battery voltage is coming from the harness,
check the clutch.
7. To check the clutch
a. Visually check gap between clutch and the
armature. If the gap is excessive the clutch
is mechanically worn out of spec and must
be replaced. A worn clutch may work when
cold and not reengage once warm and the
magnetic coil increases electrical resistance.
b. Use an ohm meter and measure the
resistance in the clutch. It should be
approximately 1.84 ohms. If the number is
much lower the coil has likely shorted out. If
the number is much higher (or innite) there is
likely a burnt or “open” coil.
Height of Cut
Before Adjusting the Height-of-Cut ensure proper air
pressure in all tires and check for even tire wear.
Note: The angle of attack of the blades should always
be level or lower at the front. This makes the blade
cut the grass only once, saves fuel and wear on the
whole mower, and allows more ecient mowing and
grass catching or dispersal.
Hydraulic Motor Support Adjustment
• Applies to 36” and 48” decks
• Always adjust caster arm spacers when making
this adjustment
• Adjust the at the tractor body equally in one of
the three settings up or down
6-3
Troubleshooting Cut Quality
Problem Description Possible Cause Solution
Streaking When strips of uncut
grass are left behind
Blades not sharp Sharpen blades
Blades worn down too far Replace blades
Engine RPM too low Mow at full throttle
Ground Speed too fast Slow down
Deck clogged with grass Clean deck
Stepped
Cutting
Sharp ridges left in the
lawn surface
Deck not leveled correctly Level the deck
Tires not properly installed/inated Check and inate tires
Blades are damaged Replace blades
Deck shell is damaged Repair or replace deck
Spindle is bent or loose Repair or replace spindle
Blades are installed incorrectly Reinstall the blades correctly
Scalping
Brown areas when deck
is close to/hitting the
ground
Lawn is uneven or bumpy Roll or level the lawn
Cut height is too low Raise cutting height
Deck is not leveled correctly Level the deck
Tire pressure is uneven Check and inate tires
Stringers Sparse patches of uncut
grass left behind mower
Blades are dull or nicked Sharpen blades
Blades worn down too far Replace blades
Engine RPM too low Mow at full throttle
Ground speed too fast Slow down
Deck clogged with grass Clean deck
Using the Caster Shims
• Applies to 36” and 48” decks
• Move 1/4” spacers above/below caster
Deck Height Pins
• Applies to 36”, 48”, 52”, and 61” decks
• Stop the machine and move the control handles
to the neutral locked position.
• Disengage the PTO and move the speed control
to the brake position.
• Stop the engine and remove the key.
• Install hairpin clips in the holes for the desired
cutting height. Both front and rear hairpin clips
should bein the same holes
Anti-Scalp Wheel Adjustments
The anti-scalp wheels on the cutter deck can be
adjusted up or down in 1/2” increments using the
extra holes in the brackets.
Cut Setting Recommendations
Correct cut height is critical to healthy turf. Cutting o
more than 1/3rd of the blade stresses the turf.
In general, the turf will be healthy when cut longer.
When cut taller, the turf develops deeper roots, is
more drought resistant, more disease resistant, and
suppresses weeds.
Cut quality is improved when cut heights are
maintained according to the best practice for the
dominant grass species in the lawn.
Clean under the deck regularly. Grass build up will
cause the airow to be interrupted and result in poor
cut quality. Blades that are worn and have rounded
tips will not cut well.
6-4
Belt Adjustment/Replacement
The pump drive belt and blade drive belt are self
adjusting, and only require replacement when worn.
Replacing the Cutter Deck Belts
1. Place the speed control in the Brake/Neutral
position and lock control handles.
2. Stop the engine, remove the key and wait for all
moving parts to stop.
3. Remove the deck covers.
4. Remove the belt by using a ½” ratchet and
extension to relieve the belt tension.
5. Reinstall in reverse order.
Replacing the Drive Belt
1. Follow instructions to remove cutter deck belt.
2. Raise and secure the machine.
3. Remove pulley cover by using the indicated
access holes to remove two Philips screws (A).
4. Use a ½” ratchet and extension to relieve belt
tension
5. Remove the belt from around pump pulleys.
6. Pass belt between the bottom of the engine
deck and the top of the idler pulley.
7. Reinstall in reverse order.
Hydraulic System
When servicing the hydraulic system it is
critical to keep any dirt or debris from getting
into the system. Clean o all parts before
disassembly and assembly.
When any of the hydraulic parts are
disconnected or removed or when the oil is
changed, air must be bled from the system. If
air is entrained in the system, loss of power,
excessive heat, and damage to the hydraulic
pumps may occur.
Bleeding Air from the Hydraulic System
1. Fill the reservoir.
2. Lift the machine so that the rear wheels are o
the ground. Be careful to support the machine
so that it will not fall or tip while the system is
bled of air.
3. With the bypass valves open and the engine
running, slowly move the control levers back
and forth ve or six times.
6-5
4. Now close the bypass valves and with the
engine running, slowly move the control levers
back and forth ve or six times.
5. It may be necessary to repeat the above steps
until all the air is purged and the rear wheels
are turning at normal speed.
After purging is complete, adjust the oil level in the
reservoir if necessary.
Checking Oil
1. Ensure mower is on a level surface.
2. Oil should reach center of the sight glass
Filling oil
1. Remove vent cap
2. Using a funnel, ll tank through oil level port
until oil reaches center of sight glass
Lubrication
The Wright Velke is made with sealed bearings,
oil based bushings and with limited grease ttings
therefore only the front caster pivots need to be
greased. Use lithium complex or compatible base
grease.
1. Set parking brake, stop engine and remove key.
2. Clean grease ttings with a rag.
3. Connect grease gun to
tting and pump until grease
begins to ooze out from the
bearings.
4. Wipe o excess grease.
• Do not use spray lube of any
kind on choke and/or throttle
cables.
• When re-installing dust cap,
use two drops of thread
locker to prevent the dust cap
coming o during operation.
Spindle/Drive Pulley R&R
1. Remove 2, ¼” bolts from split
hub and install in threaded holes
in hub.
2. Slowly tighten each bolt,
alternating as you tighten bolts
against the pulley.
3. The hub will separate from the
pulley.
4. Replace grade 8 bolts and
install in reverse order using the
assembly holes to tighten hub
onto pulley and spindle shaft.
Do not use a gear puller. It will not pull the hub
o and may frustrate you. Properly performed
this procedure should not require excessive
force.
Cutting Blades
In order to maintain the best cut, it is important that
the blades are well sharpened and not damaged.
Bent or cracked blades or blades with large nicks
need to be replaced. Blades must be balanced after
sharpening. To change the blades:
1. Stop engine, remove the key and wait for all
moving parts to stop.
2. Engage the parking brake
3. Lift front of mower and secure in the raised
position with jack stands.
4. Remove the blade nut by turning
counterclockwise.
5. Install new or re-sharpened blade. (Ensure the
blade spacers are reinstalled with the same qty
and location)
6. Torque blade bolt to 70-80 ft./lbs. / 95-108 N
Battery Service
CALIFORNIA Proposition 65 Warning.
Battery posts, terminals, and related
accessories contain lead and lead compounds,
chemicals known by the state of California to
cause cancer and reproductive harm. Wash
hands after handling.
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